Predict whether a spontaneous reaction will occur in theforward direction in each of the following. Assume that allreactants and products are in their standard states.a.)Pb(s)+Co2+(aq)-->Pb2+(aq)+Co(s)b.) The oxidation of F-(aq) to F2(g) by Br2(l)c.)6I-(aq)+CrO72-(aq)+14H(aq)-->2Cr3+(aq)+7H2O(l)+3I2(l)